47957977 has 4 divisors (see below), whose sum is σ = 48565120. Its totient is φ = 47350836.

The previous prime is 47957971. The next prime is 47957993. The reversal of 47957977 is 77975974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47957977 - 2¹⁵ = 47925209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47957971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303453 + ... + 303610.

It is an arithmetic number, because the mean of its divisors is an integer number (12141280).

Almost surely, 2^47957977 is an apocalyptic number.

It is an amenable number.

47957977 is a deficient number, since it is larger than the sum of its proper divisors (607143).

47957977 is an equidigital number, since it uses as much as digits as its factorization.

47957977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607142.

The product of its digits is 3889620, while the sum is 55.

The square root of 47957977 is about 6925.1698174124. The cubic root of 47957977 is about 363.3180308531.

The spelling of 47957977 in words is "forty-seven million, nine hundred fifty-seven thousand, nine hundred seventy-seven".